13355040402440 has 32 divisors (see below), whose sum is σ = 32780553716160. Its totient is φ = 4856378328000.

The previous prime is 13355040402433. The next prime is 13355040402481. The reversal of 13355040402440 is 4420404055331.

It is a self number, because there is not a number n which added to its sum of digits gives 13355040402440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15176181836 + ... + 15176182715.

It is an arithmetic number, because the mean of its divisors is an integer number (1024392303630).

Almost surely, 2^{13355040402440} is an apocalyptic number.

13355040402440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13355040402440 is an abundant number, since it is smaller than the sum of its proper divisors (19425513313720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13355040402440 is a wasteful number, since it uses less digits than its factorization.

13355040402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30352364573 (or 30352364569 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 13355040402440 its reverse (4420404055331), we get a palindrome (17775444457771).

The spelling of 13355040402440 in words is "thirteen trillion, three hundred fifty-five billion, forty million, four hundred two thousand, four hundred forty".